codespace/java/spring-boot-tests/spring-boot-integration-tests/spring-boot-loader-tests/spring-boot-loader-tests-app/src/main/java/org/springframework/boot/loaderapp/LoaderTestApplication.java
<reponame>wdafff/wfdo<filename>codespace/java/spring-boot-tests/spring-boot-integration-tests/spring-boot-loader-tests/spring-boot-loader-tests-app/src/main/java/org/springframework/boot/loaderapp/LoaderTestApplication.java/*
 * Copyright 2012-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.boot.loaderapp;

import java.io.File;
import java.net.JarURLConnection;
import java.net.URL;
import java.util.Arrays;

import jakarta.servlet.ServletContext;

import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.util.FileCopyUtils;

@SpringBootApplication
public class LoaderTestApplication {

	@Bean
	public CommandLineRunner commandLineRunner(ServletContext servletContext) {
		return (args) -> {
			File temp = new File(System.getProperty("java.io.tmpdir"));
			URL resourceUrl = servletContext.getResource("webjars/jquery/3.5.0/jquery.js");
			JarURLConnection connection = (JarURLConnection) resourceUrl.openConnection();
			String jarName = connection.getJarFile().getName();
			System.out.println(">>>>> jar file " + jarName);
			if(jarName.contains(temp.getAbsolutePath())) {
				System.out.println(">>>>> jar written to temp");
			}
			byte[] resourceContent = FileCopyUtils.copyToByteArray(resourceUrl.openStream());
			URL directUrl = new URL(resourceUrl.toExternalForm());
			byte[] directContent = FileCopyUtils.copyToByteArray(directUrl.openStream());
			String message = (!Arrays.equals(resourceContent, directContent)) ? "NO MATCH"
					: directContent.length + " BYTES";
			System.out.println(">>>>> " + message + " from " + resourceUrl);
		};
	}

	public static void main(String[] args) {
		SpringApplication.run(LoaderTestApplication.class, args).stop();
	}

}
